Ball-bearing.



I G. R. JAMES.

BALL BEARING.

APPLICATION FILED MAY 22,1908.

920, 149. Patented May 4, 1909.

UNITED STATES PATENT OFFICE. CHARLES R. JAMES, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO CHAPMAN BALL BEARING COMPANY, A CORPORATION OF MAINE.

BALL-BEARING.

I Specification of Letters Patent.

Patented May 4, 1909.

Application filed May 22, 1908. Serial No. 434,266.

To all whom 'it may concern:

-Be it known that 1, CHARLES R. JAMES, a subject of the King of Great Britain, residing at Boston, in the county of. Suffolk and State of Massachusetts, have invented a certain new" and useful Improvement in Ball-Bearings, of Whichthe following is a full, clear,

bearings at three points, as distinguished from extended segmental or peripheral bearings, and a ringor' housing in which the cupha ves are capable of adjustment and of having such adjustment fixed.

In the accompanying dra.rings, illustrating the invention, "in the several fi tires of which like parts are similarly des1gnated, Figure 1 is a longitudinal section of a com mon form of Wheel-hub and axle-journal,

supplied with the bearings of this invention.

Fig. 2 is a crosssection, on a larger scale,

- taken in the plane of line 22, Fig. 1, with part broken away to show one set-screwin lace. j Fig; 3 shows in cross-section and out elevation the halves of the cup. Fig. 4 is a cross-section of the cup housing. 'Fig. -5 is a cross-section, on a larger scale, of part of theassembled bearing. Fi 6 is an enlarged view of a portion of one o the annular cup halves, with a ball shown in' outline in con- .tact with the center of the raised track.

The hub 1, axle 2, end-cap 3 and dustguard cap 4 may be of usualor any approved construction. An identical ball-bearing of this invention is! shown applied to the nib and collar of the journal and like reference characters are applied to both.

5 is the cone ,having the groove 6 of larger radius than the load-bearing balls 7, and in which said balls are seated on a contact ipoint, rather than by such extended supercial segmental or peripheral. contact as would result were the cone-grooveand the balls of the same radius, thus reducing-friction and wear.

While the invention is not limited to any particular arrangement of balls, it is preferred to separate them by smaller separating balls 8 arranged in spool-likepockets 9, in such way that any two load-bearing balls and their interposed separating balls have their centers in the same line,-which is a dead center line. See Chapmans patent No. 785,663, dated March 21, 1905. p

The annular on is composed of like halves 10, having raise tracks 11 on which the load-bearing halls have point contact, so

that when these balls, the cone and cup are assembled, said balls have a three point 'contact with said cone and cup, as clearly illustrated in Fig. 5.

The cup-halves have screwthreaded peripheries 12, and are supplied with transverse grooves 13, and their faces are rovided with spanner-holes 14. These'annu ar cup halves have their ball bearing faces constructed to partially inclose the balls so as to prevent esca e of the balls in any direction.

These ha ves are arranged upon opposite sides of the balls and secured in the annular,

,interiorly screwthreaded housin 1.5, and in this housingv each cup-half may e turned so as to acouratelyadjust and center the balls,

and when this is done the adjustment may be fixed in any suitable mannerf As shown in the drawings this may be accomplished by inserting a stub-end set-screw 16 for each cup-half in one of the holes 17 in the housing opposite'o ne of the grooves 13 in each of the cu -halves.

he cone is loose on the journal. is of hardened steel and the housing of softer metal, so that hardness and elasticity are combined in a marked degree.

The preferred construction of cup-halves and housing is to provide one side of the housing with a single setscrew hole and then turn in the cup-half and set it by turning down the set-screw into an adjacent groove in that half. When this is done, the

alls are inserted and then the other cuphalfis turned into thehousing alnd any one of a number of screw-holes in the opposite The cupside of the housing may be utilized to receive a set-screw to be turned into the nearest available groove in this cup-half. to fix its adjustment. In ractice the screw-holes or set-screws in the rousing may be so spaced that the last-inserted cup-half need be given aturn equal to only a third of the space between any two grooves to bring a groove into alinement W'Ith a set-screw. Thus a very fine and accurate adjustment of the balls may be secured.

1In addition to the facility of accurately assembling and adjusting the bearing, this invention affords equal. facility of taking apart the bearing for repalrs or other puroses. Referring to 1 as an instance of the use of the invention, it will be noticed that the inner bearing is located by the dustguard cap 4 on one side and a journalscrewcollar 18 on the other side, and the outer bearing is located by the journal shoulder 19 on one side and the nut 20 on the other.

But the invention is not limited to these details.

What I claimi'sz- 1. The combination with a hub of a selfcontained ball bearing comprising a ballcone having a circular groove to receive the balls, said groove having a radius greater than that of said balls whereby each ball contacts said groove at a single point, a two part cup, each part being provided with a narrow, concave, raised circular track having a radius greater than that of said balls wherebyeach ball contacts each track at a singlepoint andmeans inclosing and uniting single point, and a housing inclosingsaid two-part cup for uniting and adjusting the parts thereof, saidhousingand inclo'sed ball e'aringbeing removable fromsai'd hub-w 3. The combinationwith a hub of aselfcontained'ball bearing comprising a ball cone havinga circular groove to receive the balls, said groove having a radius greater than that of said ballswhereby each ball contacts-said groove at a single point, a two-part cup, each part being rovided with a narrow, concave, raised circu ar track having a. radius greater than that of said balls whereby each ball contacts each track at a single point, a housing screw-threaded to and inclosing said two-part cup for uniting;an d adjusting-the parts thereof and means for fixing the ad justment thereof said housing'and-the i.i 1 closed ball bearing being removable-from said hub. V

4. The combination with a hub of a self contained ball bearin provided with a circu ar groovetofreceiye the balls,-said groove having a radius greater than that of said balls, whereby each ball contacts said groove at a single point, a twopart cup, each part being independently ad- 0 justable and being provided with a narrow, concave", raised circular track having a radius greater than that of said balls whereby each ball contacts each track'at a single point; and a housing inclosing the two parts of said cup for efi'ecting theunion and adjustment of the cu pints therein said housing and the inclosed a bearing being removable from said hub. 1

,- In testimony whereof I have hereunto set my hand this 20th day of May, A. 1),, 1908. CHARLES R. JAMES.

Witnesses: I i

H. P.-Gunrrss, MAYP. FLirNAeAN.

comprising a cone 

